lexyy.c

来自「一个小型的c语言编译器,做的非常好,不过不是我做的.」· C语言 代码 · 共 999 行 · 第 1/2 页

6,
0,

5,
0,

26,
0,

35,
0,

4,
0,

31,
0,

36,
0,

27,
0,

44,
0,

42,
0,

28,
0,

9,
0,

51,
0,

8,
0,

7,
0,

45,
0,

46,
0,

8,
0,

55,
0,
0};
# define YYTYPE char
struct yywork { YYTYPE verify, advance; } yycrank[] = {
0,0,	0,0,	1,0,	1,0,	
1,0,	1,0,	1,0,	1,0,	
1,0,	1,0,	1,0,	1,0,	
1,0,	1,0,	1,0,	1,0,	
1,0,	1,0,	1,0,	1,0,	
1,0,	1,0,	1,0,	1,0,	
1,0,	1,0,	1,0,	1,0,	
1,0,	1,0,	1,0,	1,0,	
1,0,	1,0,	1,3,	1,4,	
1,5,	1,0,	1,6,	1,7,	
1,8,	1,9,	1,10,	1,11,	
1,12,	1,13,	1,14,	1,15,	
1,16,	1,17,	1,18,	0,0,	
0,0,	0,0,	0,0,	0,0,	
0,0,	1,18,	0,0,	1,19,	
1,20,	1,21,	1,22,	1,23,	
1,24,	1,0,	1,25,	0,0,	
0,0,	0,0,	1,25,	0,0,	
1,25,	0,0,	0,0,	0,0,	
0,0,	0,0,	0,0,	0,0,	
0,0,	0,0,	0,0,	7,37,	
0,0,	0,0,	0,0,	0,0,	
0,0,	39,67,	12,42,	40,39,	
1,26,	1,0,	1,27,	1,28,	
3,33,	1,0,	14,44,	16,48,	
46,68,	0,0,	0,0,	0,0,	
16,49,	6,36,	7,38,	11,41,	
12,43,	22,60,	23,61,	23,62,	
28,63,	30,64,	14,45,	0,0,	
0,0,	0,0,	16,50,	0,0,	
0,0,	0,0,	0,0,	0,0,	
1,29,	1,30,	1,31,	1,32,	
1,0,	2,0,	2,0,	2,0,	
2,0,	2,0,	2,0,	2,0,	
2,0,	2,0,	2,0,	2,0,	
2,0,	2,0,	2,0,	2,0,	
2,0,	2,0,	2,0,	2,0,	
2,0,	2,0,	2,0,	2,0,	
2,0,	2,0,	2,0,	2,0,	
2,0,	2,0,	2,0,	2,0,	
2,0,	2,3,	4,4,	2,5,	
2,0,	2,6,	2,7,	5,35,	
2,9,	2,10,	2,11,	35,66,	
2,13,	2,14,	2,15,	2,16,	
30,65,	55,55,	55,55,	55,55,	
55,55,	55,55,	55,55,	55,55,	
55,55,	55,55,	2,19,	2,20,	
2,21,	2,22,	57,72,	2,24,	
2,0,	62,73,	66,74,	4,34,	
70,69,	74,77,	77,78,	78,79,	
4,4,	8,39,	79,80,	0,0,	
4,4,	0,0,	0,0,	0,0,	
0,0,	4,4,	4,4,	0,0,	
0,0,	0,0,	0,0,	0,0,	
0,0,	4,4,	0,0,	2,26,	
2,0,	2,27,	2,28,	4,4,	
2,0,	0,0,	4,4,	0,0,	
70,69,	0,0,	4,4,	0,0,	
4,4,	0,0,	8,39,	0,0,	
0,0,	0,0,	0,0,	8,40,	
0,0,	0,0,	0,0,	8,39,	
0,0,	0,0,	0,0,	0,0,	
8,39,	8,39,	0,0,	2,29,	
2,30,	2,31,	2,32,	2,0,	
8,39,	0,0,	0,0,	0,0,	
0,0,	0,0,	8,39,	0,0,	
0,0,	8,39,	0,0,	0,0,	
0,0,	8,39,	15,46,	8,39,	
15,47,	15,47,	15,47,	15,47,	
15,47,	15,47,	15,47,	15,47,	
15,47,	15,47,	17,51,	21,56,	
17,52,	17,52,	17,52,	17,52,	
17,52,	17,52,	17,52,	17,52,	
17,53,	17,53,	18,51,	0,0,	
18,55,	18,18,	18,18,	18,18,	
18,18,	18,18,	18,18,	18,18,	
18,18,	18,18,	51,70,	51,70,	
51,70,	51,70,	51,70,	51,70,	
51,70,	51,70,	51,70,	51,70,	
21,56,	0,0,	0,0,	0,0,	
0,0,	21,56,	0,0,	0,0,	
17,54,	21,56,	0,0,	0,0,	
0,0,	0,0,	21,56,	21,56,	
0,0,	0,0,	0,0,	0,0,	
0,0,	0,0,	21,56,	0,0,	
0,0,	0,0,	21,57,	21,58,	
21,59,	0,0,	0,0,	21,56,	
0,0,	0,0,	0,0,	21,56,	
0,0,	21,56,	0,0,	0,0,	
17,54,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	0,0,	
0,0,	0,0,	0,0,	0,0,	
0,0,	0,0,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
0,0,	0,0,	0,0,	0,0,	
25,25,	0,0,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
25,25,	25,25,	25,25,	25,25,	
47,47,	47,47,	47,47,	47,47,	
47,47,	47,47,	47,47,	47,47,	
47,47,	47,47,	52,52,	52,52,	
52,52,	52,52,	52,52,	52,52,	
52,52,	52,52,	52,53,	52,53,	
0,0,	47,69,	53,53,	53,53,	
53,53,	53,53,	53,53,	53,53,	
53,53,	53,53,	53,53,	53,53,	
0,0,	0,0,	0,0,	0,0,	
0,0,	54,71,	54,71,	54,71,	
54,71,	54,71,	54,71,	54,71,	
54,71,	54,71,	54,71,	0,0,	
0,0,	0,0,	0,0,	0,0,	
0,0,	47,69,	54,71,	54,71,	
54,71,	54,71,	54,71,	54,71,	
56,56,	69,75,	0,0,	69,75,	
0,0,	0,0,	69,76,	69,76,	
69,76,	69,76,	69,76,	69,76,	
69,76,	69,76,	69,76,	69,76,	
75,76,	75,76,	75,76,	75,76,	
75,76,	75,76,	75,76,	75,76,	
75,76,	75,76,	54,71,	54,71,	
54,71,	54,71,	54,71,	54,71,	
0,0,	56,56,	0,0,	0,0,	
0,0,	0,0,	56,56,	0,0,	
0,0,	0,0,	56,56,	0,0,	
0,0,	0,0,	0,0,	56,56,	
56,56,	0,0,	0,0,	0,0,	
0,0,	0,0,	0,0,	56,56,	
0,0,	0,0,	0,0,	0,0,	
0,0,	56,59,	0,0,	0,0,	
56,56,	0,0,	0,0,	0,0,	
56,56,	0,0,	56,56,	0,0,	
0,0};
struct yysvf yysvec[] = {
0,	0,	0,
yycrank+-1,	0,		0,	
yycrank+-128,	yysvec+1,	0,	
yycrank+35,	0,		yyvstop+1,
yycrank+-161,	0,		0,	
yycrank+62,	0,		0,	
yycrank+44,	0,		yyvstop+3,
yycrank+45,	0,		yyvstop+5,
yycrank+-200,	0,		yyvstop+7,
yycrank+0,	0,		yyvstop+9,
yycrank+0,	0,		yyvstop+11,
yycrank+46,	0,		yyvstop+13,
yycrank+47,	0,		yyvstop+15,
yycrank+0,	0,		yyvstop+17,
yycrank+53,	0,		yyvstop+19,
yycrank+224,	0,		0,	
yycrank+57,	0,		yyvstop+21,
yycrank+236,	0,		yyvstop+23,
yycrank+248,	0,		yyvstop+25,
yycrank+0,	0,		yyvstop+27,
yycrank+0,	0,		yyvstop+29,
yycrank+-282,	0,		yyvstop+31,
yycrank+48,	0,		yyvstop+33,
yycrank+49,	0,		yyvstop+35,
yycrank+0,	0,		yyvstop+37,
yycrank+309,	0,		yyvstop+39,
yycrank+0,	0,		yyvstop+41,
yycrank+0,	0,		yyvstop+43,
yycrank+51,	0,		yyvstop+45,
yycrank+0,	0,		yyvstop+47,
yycrank+52,	0,		yyvstop+49,
yycrank+0,	0,		yyvstop+51,
yycrank+0,	0,		yyvstop+53,
yycrank+0,	0,		yyvstop+55,
yycrank+0,	0,		yyvstop+57,
yycrank+61,	0,		0,	
yycrank+0,	0,		yyvstop+59,
yycrank+0,	0,		yyvstop+61,
yycrank+0,	0,		yyvstop+63,
yycrank+50,	0,		0,	
yycrank+52,	0,		0,	
yycrank+0,	0,		yyvstop+65,
yycrank+0,	0,		yyvstop+67,
yycrank+0,	0,		yyvstop+69,
yycrank+0,	0,		yyvstop+71,
yycrank+0,	0,		yyvstop+73,
yycrank+54,	0,		0,	
yycrank+384,	0,		yyvstop+75,
yycrank+0,	0,		yyvstop+77,
yycrank+0,	0,		yyvstop+79,
yycrank+0,	0,		yyvstop+81,
yycrank+258,	0,		0,	
yycrank+394,	yysvec+18,	yyvstop+83,
yycrank+406,	yysvec+18,	0,	
yycrank+421,	0,		0,	
yycrank+128,	yysvec+18,	yyvstop+85,
yycrank+-491,	0,		0,	
yycrank+-129,	yysvec+56,	yyvstop+87,
yycrank+0,	yysvec+56,	yyvstop+89,
yycrank+0,	0,		yyvstop+91,
yycrank+0,	0,		yyvstop+93,
yycrank+0,	0,		yyvstop+95,
yycrank+132,	0,		yyvstop+97,
yycrank+0,	0,		yyvstop+99,
yycrank+0,	0,		yyvstop+101,
yycrank+0,	0,		yyvstop+103,
yycrank+95,	0,		0,	
yycrank+0,	0,		yyvstop+105,
yycrank+0,	0,		yyvstop+107,
yycrank+450,	0,		0,	
yycrank+127,	yysvec+51,	yyvstop+109,
yycrank+0,	yysvec+54,	yyvstop+111,
yycrank+0,	yysvec+56,	yyvstop+113,
yycrank+0,	0,		yyvstop+115,
yycrank+89,	0,		0,	
yycrank+460,	0,		0,	
yycrank+0,	yysvec+75,	yyvstop+117,
yycrank+81,	0,		0,	
yycrank+99,	0,		0,	
yycrank+101,	0,		0,	
yycrank+0,	0,		yyvstop+119,
0,	0,	0};
struct yywork *yytop = yycrank+562;
struct yysvf *yybgin = yysvec+1;
char yymatch[] = {
00  ,01  ,01  ,01  ,01  ,01  ,01  ,01  ,
01  ,01  ,01  ,01  ,01  ,01  ,01  ,01  ,
01  ,01  ,01  ,01  ,01  ,01  ,01  ,01  ,
01  ,01  ,01  ,01  ,01  ,01  ,01  ,01  ,
01  ,01  ,'"' ,01  ,01  ,01  ,01  ,047 ,
01  ,01  ,01  ,'+' ,01  ,'+' ,01  ,01  ,
'0' ,'1' ,'1' ,'1' ,'1' ,'1' ,'1' ,'1' ,
'8' ,'8' ,01  ,01  ,01  ,01  ,'>' ,01  ,
01  ,'A' ,'A' ,'A' ,'A' ,'E' ,'A' ,'G' ,
'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,
'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,
'G' ,'G' ,'G' ,01  ,01  ,01  ,01  ,'G' ,
01  ,'A' ,'A' ,'A' ,'A' ,'E' ,'A' ,'G' ,
'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,
'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,'G' ,
'G' ,'G' ,'G' ,01  ,01  ,01  ,01  ,01  ,
0};
char yyextra[] = {
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0};
/*	ncform	4.1	83/08/11	*/

int yylineno =1;
# define YYU(x) x
# define NLSTATE yyprevious=YYNEWLINE
char yytext[YYLMAX];
struct yysvf *yylstate [YYLMAX], **yylsp, **yyolsp;
char yysbuf[YYLMAX];
char *yysptr = yysbuf;
int *yyfnd;
extern struct yysvf *yyestate;
int yyprevious = YYNEWLINE;
yylook(){
	register struct yysvf *yystate, **lsp;
	register struct yywork *yyt;
	struct yysvf *yyz;
	int yych;
	struct yywork *yyr;
# ifdef LEXDEBUG
	int debug;
# endif
	char *yylastch;
	/* start off machines */
# ifdef LEXDEBUG
	debug = 0;
# endif
	if (!yymorfg)
		yylastch = yytext;
	else {
		yymorfg=0;
		yylastch = yytext+yyleng;
		}
	for(;;){
		lsp = yylstate;
		yyestate = yystate = yybgin;
		if (yyprevious==YYNEWLINE) yystate++;
		for (;;){
# ifdef LEXDEBUG
			if(debug)fprintf(yyout,"state %d\n",yystate-yysvec-1);
# endif
			yyt = yystate->yystoff;
			if(yyt == yycrank){		/* may not be any transitions */
				yyz = yystate->yyother;
				if(yyz == 0)break;
				if(yyz->yystoff == yycrank)break;
				}
			*yylastch++ = yych = input();
		tryagain:
# ifdef LEXDEBUG
			if(debug){
				fprintf(yyout,"char ");
				allprint(yych);
				putchar('\n');
				}
# endif
			yyr = yyt;
			if ( (int)yyt > (int)yycrank){
				yyt = yyr + yych;
				if (yyt <= yytop && yyt->verify+yysvec == yystate){
					if(yyt->advance+yysvec == YYLERR)	/* error transitions */
						{unput(*--yylastch);break;}
					*lsp++ = yystate = yyt->advance+yysvec;
					goto contin;
					}
				}
# ifdef YYOPTIM
			else if((int)yyt < (int)yycrank) {		/* r < yycrank */
				yyt = yyr = yycrank+(yycrank-yyt);
# ifdef LEXDEBUG
				if(debug)fprintf(yyout,"compressed state\n");
# endif
				yyt = yyt + yych;
				if(yyt <= yytop && yyt->verify+yysvec == yystate){
					if(yyt->advance+yysvec == YYLERR)	/* error transitions */
						{unput(*--yylastch);break;}
					*lsp++ = yystate = yyt->advance+yysvec;
					goto contin;
					}
				yyt = yyr + YYU(yymatch[yych]);
# ifdef LEXDEBUG
				if(debug){
					fprintf(yyout,"try fall back character ");
					allprint(YYU(yymatch[yych]));
					putchar('\n');
					}
# endif
				if(yyt <= yytop && yyt->verify+yysvec == yystate){
					if(yyt->advance+yysvec == YYLERR)	/* error transition */
						{unput(*--yylastch);break;}
					*lsp++ = yystate = yyt->advance+yysvec;
					goto contin;
					}
				}
			if ((yystate = yystate->yyother) && (yyt= yystate->yystoff) != yycrank){
# ifdef LEXDEBUG
				if(debug)fprintf(yyout,"fall back to state %d\n",yystate-yysvec-1);
# endif
				goto tryagain;
				}
# endif
			else
				{unput(*--yylastch);break;}
		contin:
# ifdef LEXDEBUG
			if(debug){
				fprintf(yyout,"state %d char ",yystate-yysvec-1);
				allprint(yych);
				putchar('\n');
				}
# endif
			;
			}
# ifdef LEXDEBUG
		if(debug){
			fprintf(yyout,"stopped at %d with ",*(lsp-1)-yysvec-1);
			allprint(yych);
			putchar('\n');
			}
# endif
		while (lsp-- > yylstate){
			*yylastch-- = 0;
			if (*lsp != 0 && (yyfnd= (*lsp)->yystops) && *yyfnd > 0){
				yyolsp = lsp;
				if(yyextra[*yyfnd]){		/* must backup */
					while(yyback((*lsp)->yystops,-*yyfnd) != 1 && lsp > yylstate){
						lsp--;
						unput(*yylastch--);
						}
					}
				yyprevious = YYU(*yylastch);
				yylsp = lsp;
				yyleng = yylastch-yytext+1;
				yytext[yyleng] = 0;
# ifdef LEXDEBUG
				if(debug){
					fprintf(yyout,"\nmatch ");
					sprint(yytext);
					fprintf(yyout," action %d\n",*yyfnd);
					}
# endif
				return(*yyfnd++);
				}
			unput(*yylastch);
			}
		if (yytext[0] == 0  /* && feof(yyin) */)
			{
			yysptr=yysbuf;
			return(0);
			}
		yyprevious = yytext[0] = input();
		if (yyprevious>0)
			output(yyprevious);
		yylastch=yytext;
# ifdef LEXDEBUG
		if(debug)putchar('\n');
# endif
		}
	}
yyback(p, m)
	int *p;
{
if (p==0) return(0);
while (*p)
	{
	if (*p++ == m)
		return(1);
	}
return(0);
}
	/* the following are only used in the lex library */
yyinput(){
	return(input());
	}
yyoutput(c)
  int c; {
	output(c);
	}
yyunput(c)
   int c; {
	unput(c);
	}